31:Tdf5,nativeMD5 = function(d){ ;function M(d){for(var _,m="0123456789ABCDEF",f="",r=0;r>>4&15)+m.charAt(15&_);return f}function X(d){for(var _=Array(d.length>>2),m=0;m<_.length;m++)_[m]=0;for(m=0;m<8*d.length;m+=8)_[m>>5]|=(255&d.charCodeAt(m/8))<>5]>>>m%32&255);return _}function Y(d,_){d[_>>5]|=128<<_%32,d[14+(_+64>>>9<<4)]=_;for(var m=1732584193,f=-271733879,r=-1732584194,i=271733878,n=0;n>16)+(_>>16)+(m>>16)<<16|65535&m}function bit_rol(d,_){return d<<_|d>>>32-_} var r = M(V(Y(X(d),8*d.length))); return r.toLowerCase() }32:[{"id":"01ade3158a7754250c718ed9b47eaa6c7e02c46c46f8ceca9ee8004005ff17890f5f4cc2ab3c29d4731af5bb7999412a6ea801a1d42e080e46391ca06189c006","href":"https://static.observableusercontent.com/files/01ade3158a7754250c718ed9b47eaa6c7e02c46c46f8ceca9ee8004005ff17890f5f4cc2ab3c29d4731af5bb7999412a6ea801a1d42e080e46391ca06189c006","name":"design-dashboard-ui-or-webapp-ui-or-admin-dashboard.jpg","type":"image/jpeg","lastModified":1600406498199.305,"size":30586}] 2f:{"title":"Client side hashing","cells":[{"id":0,"value":"md`# Client side hashing`","pinned":false,"hidden":false,"mode":"ojs"},{"id":5,"value":"md`Comparing different kinds of client side hashing libs `","pinned":false,"hidden":false,"mode":"ojs"},{"id":14,"value":"md`## Load Libs`","pinned":false,"hidden":false,"mode":"ojs"},{"id":310,"value":"md`#### [Hash-wasm](https://github.com/Daninet/hash-wasm)`","pinned":false,"hidden":false,"mode":"ojs"},{"id":316,"value":"md`Hash wasm is webassembly based and probably fastest option\n\nHere are benchmark results. https://csb-9b6mf.daninet.now.sh/`","pinned":false,"hidden":false,"mode":"ojs"},{"id":314,"value":"hashWasm = require('hash-wasm')","pinned":false,"hidden":false,"mode":"ojs"},{"id":171,"value":"md`#### Native`","pinned":false,"hidden":false,"mode":"ojs"},{"id":371,"value":"md`I would probably favor native implementation`","pinned":false,"hidden":false,"mode":"ojs"},{"id":175,"value":"$31","pinned":false,"hidden":false,"mode":"ojs"},{"id":357,"value":"async function nativeSHA1(message) {\n // encode as UTF-8\n const msgBuffer = new TextEncoder('utf-8').encode(message); \n\n // hash the message\n const hashBuffer = await crypto.subtle.digest('SHA-1', msgBuffer);\n\n // convert ArrayBuffer to Array\n const hashArray = Array.from(new Uint8Array(hashBuffer));\n\n // convert bytes to hex string \n const hashHex = hashArray.map(b => ('00' + b.toString(16)).slice(-2)).join('');\n return hashHex;\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":340,"value":"async function nativeSHA256(message) {\n // encode as UTF-8\n const msgBuffer = new TextEncoder('utf-8').encode(message); \n\n // hash the message\n const hashBuffer = await crypto.subtle.digest('SHA-256', msgBuffer);\n\n // convert ArrayBuffer to Array\n const hashArray = Array.from(new Uint8Array(hashBuffer));\n\n // convert bytes to hex string \n const hashHex = hashArray.map(b => ('00' + b.toString(16)).slice(-2)).join('');\n return hashHex;\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":349,"value":"async function nativeSHA512(message) {\n // encode as UTF-8\n const msgBuffer = new TextEncoder('utf-8').encode(message); \n\n // hash the message\n const hashBuffer = await crypto.subtle.digest('SHA-512', msgBuffer);\n\n // convert ArrayBuffer to Array\n const hashArray = Array.from(new Uint8Array(hashBuffer));\n\n // convert bytes to hex string \n const hashHex = hashArray.map(b => ('00' + b.toString(16)).slice(-2)).join('');\n return hashHex;\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":120,"value":"md`#### [Crypto](https://github.com/brix/crypto-js)`","pinned":false,"hidden":false,"mode":"ojs"},{"id":112,"value":"md` Crypto.js is modular and we can import only needed part from it`","pinned":false,"hidden":false,"mode":"ojs"},{"id":21,"value":"cryptojs = require('https://bundle.run/crypto-js@4.0.0')","pinned":false,"hidden":false,"mode":"ojs"},{"id":375,"value":"md`## File to string`","pinned":false,"hidden":false,"mode":"ojs"},{"id":49,"value":"md`We will be hashing the following image`","pinned":false,"hidden":false,"mode":"ojs"},{"id":201,"value":"fileBlob = FileAttachment(\"design-dashboard-ui-or-webapp-ui-or-admin-dashboard.jpg\").blob()","pinned":false,"hidden":false,"mode":"ojs"},{"id":53,"value":"FileAttachment(\"design-dashboard-ui-or-webapp-ui-or-admin-dashboard.jpg\").image()","pinned":false,"hidden":false,"mode":"ojs"},{"id":187,"value":"fileBinaryStringResult = {\n const reader = new FileReader();\n reader.readAsBinaryString(fileBlob);\n return new Promise((resolve,rej)=>{\n reader.onload = function(e) { \n resolve(e.target.result);\n }; \n })\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":58,"value":"md`### MD5`","pinned":false,"hidden":false,"mode":"ojs"},{"id":63,"value":"md`MD5 is a widely used hash function. It's been used in a variety of security applications and is also commonly used to check the integrity of files. Though, MD5 is not collision resistant, and it isn't suitable for applications like SSL certificates or digital signatures that rely on this property.\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":256,"value":"cryptojs.MD5(fileBinaryStringResult).toString()","pinned":true,"hidden":false,"mode":"ojs"},{"id":183,"value":"nativeMD5( unescape( encodeURIComponent(fileBinaryStringResult) ) )","pinned":true,"hidden":false,"mode":"ojs"},{"id":320,"value":"hashWasm.md5(fileBinaryStringResult)","pinned":true,"hidden":false,"mode":"ojs"},{"id":398,"value":"hashWasm.md5(\"test\")","pinned":true,"hidden":false,"mode":"ojs"},{"id":400,"value":"nativeMD5(\"test\")","pinned":true,"hidden":false,"mode":"ojs"},{"id":69,"value":"md`### SHA1`","pinned":false,"hidden":false,"mode":"ojs"},{"id":66,"value":"md`The SHA hash functions were designed by the National Security Agency (NSA). SHA-1 is the most established of the existing SHA hash functions, and it's used in a variety of security applications and protocols. Though, SHA-1's collision resistance has been weakening as new attacks are discovered or improved.\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":279,"value":"cryptojs.SHA1(fileBinaryStringResult).toString()","pinned":true,"hidden":false,"mode":"ojs"},{"id":334,"value":"nativeSHA1(fileBinaryStringResult)","pinned":true,"hidden":false,"mode":"ojs"},{"id":324,"value":"hashWasm.sha1(fileBinaryStringResult)","pinned":true,"hidden":false,"mode":"ojs"},{"id":72,"value":"md`### SHA-2 (SHA256, SHA512)\n`\n","pinned":false,"hidden":false,"mode":"ojs"},{"id":285,"value":"md`##### 256`","pinned":false,"hidden":false,"mode":"ojs"},{"id":388,"value":"md`SHA-256 is one of the four variants in the SHA-2 set. It isn't as widely used as SHA-1, though it appears to provide much better security.`","pinned":false,"hidden":false,"mode":"ojs"},{"id":281,"value":"cryptojs.SHA256(fileBinaryStringResult).toString()","pinned":true,"hidden":false,"mode":"ojs"},{"id":326,"value":"hashWasm.sha256(fileBinaryStringResult)","pinned":true,"hidden":false,"mode":"ojs"},{"id":346,"value":"nativeSHA256(fileBinaryStringResult)","pinned":true,"hidden":false,"mode":"ojs"},{"id":288,"value":"md`##### 512`","pinned":false,"hidden":false,"mode":"ojs"},{"id":385,"value":"md`SHA-512 is largely identical to SHA-256 but operates on 64-bit words rather than 32.\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":291,"value":"cryptojs.SHA512(fileBinaryStringResult).toString()","pinned":true,"hidden":false,"mode":"ojs"},{"id":328,"value":"hashWasm.sha512(fileBinaryStringResult)","pinned":true,"hidden":false,"mode":"ojs"},{"id":352,"value":"nativeSHA512(fileBinaryStringResult)","pinned":true,"hidden":false,"mode":"ojs"},{"id":82,"value":"md`# HMAC\nKeyed-hash message authentication codes (HMAC) is a mechanism for message authentication using cryptographic hash functions`","pinned":false,"hidden":false,"mode":"ojs"},{"id":92,"value":"md`### hmac md5`","pinned":false,"hidden":false,"mode":"ojs"},{"id":296,"value":"cryptojs.HmacMD5(fileBinaryStringResult, \"Secret Passphrase\").toString()","pinned":true,"hidden":false,"mode":"ojs"},{"id":93,"value":"md`### hmac sha1`","pinned":false,"hidden":false,"mode":"ojs"},{"id":302,"value":"cryptojs.HmacSHA1(fileBinaryStringResult, \"Secret Passphrase\").toString()","pinned":true,"hidden":false,"mode":"ojs"},{"id":96,"value":"md`### hmac sha2`","pinned":false,"hidden":false,"mode":"ojs"},{"id":105,"value":"md`##### 256 bit`","pinned":false,"hidden":false,"mode":"ojs"},{"id":304,"value":"cryptojs.HmacSHA256(fileBinaryStringResult, \"Secret Passphrase\").toString()","pinned":true,"hidden":false,"mode":"ojs"},{"id":108,"value":"md`##### 512 bit`","pinned":false,"hidden":false,"mode":"ojs"},{"id":306,"value":"cryptojs.HmacSHA512(fileBinaryStringResult, \"Secret Passphrase\").toString()","pinned":true,"hidden":false,"mode":"ojs"}],"files":"$W32","stdlib":"1","titling":"auto"}